i discovered that i had hyperthyroidism which was from grave's disease and grave's thyroid eye disease in jan. 2009. at the end of march i had my thyroid removed. never let anyone use the radiation treatment if it is in your eyes. my surgeon said if we had waited another week i would have been dead. they started me on 75 mcg of levoxyl. it made me mean, i prayed to God to let me die in my sleep every night. the dosage was changed to 88 mcg. my hair was falling out by the handfuls. i kept calling my dr. and being told it was normal. i lost 75% of my hair mass almost to non reversible. i have been on appearex and women's rogaine once a day and am using nioxin hair cleanser and conditioner for 2 months. i have new growth thank goodness. my toes almost froze off my feet, the headaches cannot even be described, i gained 40 lbs, this will be the 3rd time in 7 mos. they need to change my dosage to 100 mcg. my body cannot take it. today i am starting synthroid. until i found this site today i had no idea most of my agony was from levoxyl and it's side effects. thanks so much for all the information. good luck to everyone.